Another x16xe nova running issue

[paddy138]

Currently finishing off my nova with a x16xe lump, it starts no bother and runs grand most of the time, but if i rev it suddenly it dies, but if i rev it up gradually its ok, if it cuts out it will start again no bother, when the revs are above roughly 1200 rpm i can rev it quickly and its ok, but it just seems to be idle up to 1200-1500rpm,
anyone any ideas as it as my head wrecked at the minute

[Southie]

Have you cleaned your idle control valve out?

What colour are your plugs?

Have you blanked off the EGR?

Was the engine running okay before fitting?

Have you done a service on the engine at all?

[paddy138]

icv cleaned, new plugs, ones i took out were a bit white, took this as to be running lean because egr on exhaust wasnt blanked properly, sorted now, and egr is blanked off at tb.
new oil and filter and not using an air filter at the minute, is the map sensor the one with the grey 2 pin square plug, as i was wondering would it be a problem with it,

[Southie]

Have you tried adjusting the throttle cable at all?

Was the engine okay before fitting to yours?

Stick an air filter on and see if there's any difference, it could be drawing too much air in.

[paddy138]

yeah i had it running in the car before i stripped it about 3 years ago, il try an air filter, maybe it is drawing too much air and overloading the map sensor or something, il adjust the cable also and let ya know how i get on, cheers

[gsi nova jay]

Is the breather or the wire connected properly on the map sensor I had the same problem and turned out to be that m8

[paddy138]

https://vimeo.com/66190378


heres a video of it revving at the start im snapping the throttle to rev it quickly and you can hear its not right, then im revving it slowly and its ok, and at end i rev it quickly again and it dies, any toughts, also wiring to map sensor seems ok

[chrisd1986]

The map sensor is the one that has a vac pipe from the inlet to a black box with a green 4 pin plug iirc

[paddy138]

http://i226.photobucket.com/albums/dd69/paddy138/20130515_193741_zpsc50720f1.jpg (http://s226.photobucket.com/user/paddy138/media/20130515_193741_zpsc50720f1.jpg.html)

http://i226.photobucket.com/albums/dd69/paddy138/20130515_193810_zpsc36f2024.jpg (http://s226.photobucket.com/user/paddy138/media/20130515_193810_zpsc36f2024.jpg.html)

top is what i beleive to be a map sensor, and have it plumbed as so into manifold,

bottom photo is a single black wire that is in loom with grey map sensor plug and oxygen sensor plug, i tought it was an earth but was testing it there and doesnt seem to be, any ideas

[staggy_gsi]

That top pic isnt the map sensor mate, its an actuator for something i think....
The map sensor is kinda flat and rectangular, with a green 4 pin plug and only one pipe onto it.

And that wire i would have said was an earth.

[chrisd1986]

The pic in the top is to do with the vac system as the map sensor only has one vac pipe going to it which is bigger than the ones that go to this unit pictured

[paddy138]

crap, did any of them ever run without a map sensor, anyone got a pic handy of there map sensor and plug, i dont have a plug for my map sensor, cause all the plugs are connected

[chrisd1986]

They run crap with out one, al nip down my garage once the mrs is back and al get one

[gsi nova jay]

They run with out it but don't rev properly when you floor it just dies

[paddy138]

crap, thats my problem then, if you could get the gm part number off it too, il order one, i dont think i have a plug on my loom for it, i have two other looms somewhere so i will dig them out and them out and look for a connector

[paddy138]

got a new map sensor and guess what, its perfect now, thanks for the help guys